package chapter03.example;
class Student4{
    private String name;
    private int age;
    public String getName(){
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        if (age<=0){
            System.out.println("您输入的年龄有误！");
        }else{
            this.age = age;
        }
    }
    public void read(){
        System.out.println("大家好，我是"+name+",年龄"+age);
    }
}
public class Example04 {
    public static void main(String[] args){
        Student4 stu = new Student4 ();
        stu.setName("张三");
        stu.setAge(-18);
        stu.read();
    }
}
